Ray Allen won't be defeating BOS by himself, nor will he be allowed to be much of a factor. BOS will know where he's at at ALL times on the floor.
A large part of Ray's value in Boston (and in Miami) is that you have to know where he is at all times, which limits a team's ability to double team other players, and helps space the floor. It worked in Boston and it will work in Miami. If you had the choice between having a player help on a LeBron drive or sticking with Ray, which do you choose? I think most teams are going to opt for the former and leave Ray with open shot after open shot. He won't beat a team by himself, but he will help his team, which is kind of the point of basketball.
I'm sure that Ray Allen will help MIA. But I'm also pretty sure that he won't help them get by BOS, as we are presently constructed now.
I really believe that BOS now has the pieces to get by MIA.
As great a player as LeBron is right now, he needed some unusual shots being made by Chris Bosh and a performance in game 6 that was unlike ANY I've ever seen in my life to beat BOS.
We won't see those kind of games from LeBron ever again.
And this was done without AB, Jeff Green, or Wilcox - all of whom played rather well and crucial minutes for BOS last season.
Like I said earlier - no matter how much Ray Allen will help MIA - the pieces that BOS now have makes them better than MIA I believe.